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Summary

Increasingly stringent environmental regulations and industry adoption of waste minimization guidelines have thus, stimulated the need for the development of recycling and reuse options for metal related waste. This book, therefore, gives an overview of the waste generation, recycle and reuse along the mining, beneficiation, extraction, manufacturing and post-consumer value chain. This book reviews current status and future trends in the recycling and reuse of mineral and metal waste and also details the policy and legislation regarding the waste management, health and environmental impacts in the mining, beneficiation, metal extraction and manufacturing processes.

This book is a useful reference for engineers and researchers in industry, policymakers and legislators in governance, and academics on the current status and future trends in the recycling and reuse of mineral and metal waste. Some of the key features of the book are as follows:

Holistic approach to waste generation, recycling and reuse along the minerals and metals extraction.

Integrates the technical issues related to efficient resources utilization with the policy and regulatory framework.

Novel approach to addressing future commodity shortages.

Table of Contents

1. Overview

1.1 Introduction

1.2 Legislation and policies governing the environmental and health impacts of metallic waste

1.3 Mining and beneficiation waste production and utilization

1.4 Ferrous metals waste production and utilization

1.5 Ferroalloys waste production and utilization

1.6Base metals waste production and utilization

1.7 Hydrometallurgical waste production and utilization

1.8 Metal manufacturing and finishing waste production and utilization

1.9 Post-consumer waste production and utilization

1.10 Conclusions and future outlook

References

2. Legislation and policies governing the environmental and health impacts of metallic waste

2.1 Introduction

2.2 Legislation and policies

2.3 Environmental and health impacts

2.4 Concluding remarks

References

3. Mining and beneficiation waste production and utilization

3.1 Introduction

3.2 Mine Overburden and Waste Rock

3.3 Mineral Beneficiation Waste

3.4 Acid Mine Drainage

3.5 Concluding Remarks

References

4. Ferrous metals waste production and utilization

4.1 Introduction

4.2 Production of iron and steel

4.3 Refractory materials in the iron and steel making process

4.4 Overview of waste generation in the iron and steel making processes

4.5 Categories of metallurgical wastes generated in iron and steel making unit process

4.6 Recycling and reuse of iron and steel making wastes

4.7 Trends and challenges to waste reduction in the iron and steel making process

4.8 Concluding remarks

5. Ferroalloys waste production and utilization

5.1. Introduction

5.2. Ferroalloys production processes

5.3 Production of chromium and its alloys

5.4 Production of manganese and its alloys

5.5 Silicon and its alloys

5.6 Concluding remarks

References

6. Base metals smelting waste production and utilization

6.1. Introduction

6.2 Pyrometallurgical extraction of copper

6.3 Pyrometallurgical processing of nickel, cobalt and platinum group metals

6.4 Waste production and utilization in the base metal production processes

6.5. Concluding remarks

References

7. Hydrometallurgical waste production and utilization

7.1 Introduction

7.2. Leaching

7.3 Purification and Concentration Processes

7.4 Electrochemical Processes

7.5 Base Metals Production

7.6 Precious Metals Production

7.7. Strategic and Critical Metals

7.8 Final Remarks

References

8. Metal manufacturing and finishing waste production and utilization

8.1 Introduction:

8.2Metal forming processes

8.3 Pickling of formed and heat treated steel products

8.4 Metal finishing processes

8.5 Foundry processes

8.6 Concluding remarks

References

9. Post-consumer waste production and utilization

9.1 Introduction

9.2 Legislation and policies governing post-consumer wastes

9.3 Recyclable metals

9.4 Critical post-consumer sectors

9.5 Concluding remarks

References

10. Conclusions and future prospects

10.1 Introduction

10.2 Challenges

10.3 Future Outlook

10.4 Concluding Remarks

References

Author(s) Bio

Sehliselo Ndlovu is an Associate Professor in the School of Chemical and Metallurgical Engineering at the University of the Witwatersrand in Johannesburg, South Africa. Her specialization is in extractive metallurgy, and in particular, mineral processing, hydrometallurgy, biohydrometallurgy and the treatment of industrial and mining effluents. She holds a Diploma of Imperial College (DIC) in Hydrometallurgy and a PhD in Minerals Engineering from Imperial College, London in the United Kingdom. She has over 12 years of experience in the Metallurgical Engineering field. Sehliselo currently holds a DST/NRF SARChI Professorial Chair in Hydrometallurgy and Sustainable Development at the University of Witwatersrand.

Geoffrey S. Simate is a Senior Lecturer in the School of Chemical and Metallurgical Engineering at the University of the Witwatersrand, Johannesburg. He has more than 9 years of hydrometallurgical industrial experience where he held various senior metallurgical engineering positions. He holds a PhD in Chemical Engineering from the University of the Witwatersrand, Johannesburg, and has published several technical journal articles and eight book chapters.

Elias Matinde is a Senior Lecturer in the School of Chemical and Metallurgical Engineering at the University of Witwatersrand, Johannesburg. Elias has extensive experience in the scientific and applied research and development of metallurgical processes, and in technical consultancy and metallurgical advisory in diverse areas of metallurgical processes. He holds a PhD in Metallurgical Engineering from Tohoku University in Japan, and is a registered Professional Engineer with the Engineering Council of South Africa.

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